baber/WOPTO huggingface dataset:
Patent GB-1375372-A (GB)
IPC: G01F23/24
Filed: 1971-09-18
Abstract: 1375372 Monitoring liquid level and temperature LUCAS ELECTRICAL CO Ltd 30 June 1972 [18 Sept 1971] 43621/71 Heading G1N [Also in Divisions G4 and H3]  A positive temperature coefficient resistor 13 Fig. 1 attached to a metal cup 12 mounted on the lid 9 of a liquid container by insulators 8, 11, has an impedance to earth through the cup 12 and the liquid which is low when the cup is immersed in the liquid and high when the liquid level falls below the cup. The resistor unit 10 is connected to a multi-vibrator oscillator comprising transistors 25, 28 Fig.2 with positive feedback via elements 32, 34, 35 and negative feedback via elements 32, 33. When the impedance of element 10 is low, i.e. the liquid reaches cup 12, the circuit does not oscillate; when the impedance of unit 10 is high i.e. the liquid level is below cup 12, the positive feedback exceeds the negative feedback and the circuit oscillates, causing an output transistor 39 to conduct when transistor 28 is conducting, whereby a relay 41 is energized to operate an alarm 44. Additional feedback via diode 36 and resistor 37 causes the off off periods of transistor 25 to be much longer than the on periods, whereby transistor 39 conducts for e.g. 90% of the time. The alarm is also operated when the cup 12 is immersed in the liquid, if the liquid temperature is sufficiently high to raise the resistance of unit 10 to cause oscillation. For use with an engine coolant, the relay 41 may control a radiator fan.
Patent GB-1271813-A (GB)
Title: Analogue multiplier
IPC: G06G7/16
Filed: 1969-09-04
Abstract: 1,271,813. Analogue multipliers. AUSTRALIA, POSTMASTER-GENERAL'S DEPARTMENT RESEARCH LABORATORIES. 4 Sept., 1969 [5 Sept., 1968], No. 43817/69. Heading G4G. In an analogue multipler employing signalsplitting devices-e.g. transistors for current splitting, or fluid-flow dividing arrangementsthe input signal i 0 , representing one multiplicand is split into two parts in a given ratio α 1 : (1-α 1 ), each part being fed to a respective further signal-splitting device, each of which splits its input in the ratio α 2  : (1-α 2 ), to provide four output currents i 1 , i 2 , i 3 , and i 4 . These outputs are interconnected in pairs-(i 1 +i 3 ), (i 2  + i 4 ), (i 1  + i 4 ) and (i 2  + i 3 )- and the difference signals [(i 1 +i 3 )-(i 2 +i 4 )] and [(i 1 +i 4 )-(i 2 +i 3 )] obtained. One of these difference signals- [(i 1 +i 4 )-(i 2 +i 3 )]-together with a control signal j 2 , is fed via a feedback path to the two further signal-splitting devices to adjust the splitting ratio α 2 , the feedback arrangement being such as to adjust α 2  until the above difference signal equals the applied control signal j 2 . It is shown that for this condition the other other difference signal [(i 1 +i 3 )-(i 2 +i 4 )] is proportional to i 0 j 2 . whereby if the input signal i 0  and the control signal j 2  are made proportional to a pair of multiplicands, the latter difference signal represents their product. Alternatively, signals (i 1  + i 3 ) and (i 2  + i 4 ) may be employed as the input signals to a further similar stage employing two further signal splitting devices the splitting ratio α 3  : (1-α 3 ) of which is controlled by a further control signal j 3  to give an output signal proportional to i 0 j 2 j 3 . Fig. 4 shows one stage (subsequent to the first) of a multistage multiplier employing two pairs of transistors 208 and 210 as the current-splitting devices, each pair operating in the manner indicated in Fig. 2, the input currents α 1 i 0  and (1-α 1 )i 0  being derived from the previous stage, and the stage output signal appearing across terminals T 1  and T 2 , to which outputs 211 and 213, and 214 and 212, are respectively connected. The latter outputs are also interconnected such that 211 and 214 are joined at terminals T 3  and 212 and 213 at terminal T 4 , between which a control current generator is connected to superimpose an adjustable control current upon the difference current flowing between terminals T 3  and T 4 ; the resultant current is applied to the two transistors of each of the pairs 208 and 210 in opposite senses so as to reduce the resultant current to zero. The control current generator S 1  may be formed by a pair of transistors between the bases of which a control voltage is applied (Fig. 10, not shown). In an alternative arrangement (Fig. 3, not shown) the feedback path employs a difference amplifier. In a multiplier employing fluid flow dividing devices, the flow control elements determining the splitting ratios would be variable throttles controllable by the control signal.
Patent GB-1191226-A (GB)
Title: Improvements in or Relating to Machine Tools
Inventor: WALKER WALTER
IPC: B23Q5/14
Filed: 1968-09-14
Abstract: 1,191,226. Controlling machine tools. HEPWORTH IRON CO. (ENG.) Ltd. 14 Sept., 1968, No. 43836/68. Heading B3B. In a machine tool having manually operable gear selectors, each independently movable between two positions by a hand lever and each provided with a declutching and braking plunger, the plungars being linked together so that the depression of any one hand lever depresses all the plungers, solenoid-operated hydraulic actuators are provided and which are connected to the respective gear selectors and plungers whereby remote operation of the gear selectors and hence remote control of the machine tool may be effected. Each piston or cylinder actuator 17 is pivotably mounted on a plate 1 secured to the machine gear-box, and the piston rod 9 connected to a selector 15. A further actuator 25 is provided, the piston rod 8 of which being connected to a cross-bar 19 which engages the buttons 22 of the clutch and brake plungers 23. All the actuators are provided with solenoid valves 18, 17 and 26, 24 whereby the actuators may be remotely controlled.
Patent GB-957755-A (GB)
Title: Method and device for homogenizing a liquid or a liquid mixture
IPC: B04B15/00
Filed: 1961-12-08
Abstract: 957,755. Mixing and homogenizing liquids. SEPARATOR A.B. Dec. 8, 1961 [Dec. 10, 1960], No. 44020/61. Headings B1C and B1V. Liquids are mixed and homogenized by creating a free surface in a rotating vessel by means of centrifugal force and arranging a drag element below the surface, there being such difference in velocity between the liquid and the drag element that cavitation occurs continuously. As shown in Fig. 1, in a centrifuge a discontinuous phase, e.g, cream, is separated towards the centre of the disc set 4 and fed through an aperture to a rotating paring chamber 6 where it is homogenized by the action of a stationary drag member 9 supported from the paring disc 8 to be below the free surface 10 of the liquid in the chamber. The homogenized liquid is conveyed by a paring member 7 to the interior of the housing 8 whence it emerges from the annular aperture surrounding the tube 1, through which another mixture component can be introduced, and thence recirculated through a port in the bottom of the distributer 2 to the distribution apertures 3 in the disc set 4. The completely homogenized liquid is discharged from the space surrounding the paring chamber 6 by any suitable means. In a modification, Fig. 2, the drag elements are constituted by saw-like teeth 12 arranged radially around the periphery of a disc 13 which constitutes a cover for the paring disc.
Patent GB-1058510-A (GB)
Title: Improvements in and relating to the repair or restoration of road- and like surfaces
IPC: E01C19/20
Filed: 1965-10-18
Abstract: 1,058,510. Repairing road surfaces. W. SCHIMMEL. Oct. 18, 1965 [Jan. 29, 1965], No. 44034/65. Heading E1G. A method of repairing a road or like surface after trenching, comprises making sloping cuts 7 through the finishing and base layers, mixing the cut material which include backfill 8 and a binder, such as cement, bitumen or the like, and adding water for consolidation, compacting the mixed material and finishing with a layer of surfacing material. A machine for carrying out repairs by this method is based on a conventional tractor having means for spreading a controlled amount of cement over the temporarily filled trench area, means for making the sloping cuts and a twin mixer unit of adjustable width followed by a screed plate.
Patent GB-1530614-A (GB)
Title: Thisubstituted 1,2,4-triazole compounds
IPC: C07D249/10
Filed: 1975-10-27
Abstract: 1530614 Aroylphenyltriazoles CIBA GEIGY AG 27 Oct 1975 [29 Oct 1974] 44087/75 Heading C2C  The invention comprises compounds (I) where R is C 1-7  alkyl substituted by free etherified or esterified hydroxy, oxo, gem-di-(C 1-7  alkoxy) or disubstituted amino, or R may be optionally substituted carbamoyl; Ar is optionally substituted phenyl or pyridyl; Ph is optionally substituted 1,2-phenylene; and Am is disubstituted amino, their acid addition salts, their preparation by known methods, and pharmaceutical preparations having anticonvulsive and tranquillizing properties comprising the compounds of the invention with suitable carriers. The preparations of intermediates is described.
Patent GB-1310869-A (GB)
Title: Data processing systems
IPC: G06F13/12
Filed: 1971-09-22
Abstract: 1310869 Data processing INTERNATIONAL BUSINESS MACHINES CORP 22 Sept 1971 [23 Dec 1970] 44103/71 Heading G4A In an I/O data transfer system, a store holds channel command words CCW some of which are structured into chains in which only the CCW heading the chain includes a coded command, and I/O operations are controlled by a controller which is responsive to a channel including means for detecting the presence of a coded command in a CCW, for executing such a CCW and subsequent CCW's in its chain, for storing a detected CCW which includes a coded command until detection of a subsequent CCW including a coded command, and means responsive to the controller for fetching and re-executing the stored CCW and the subsequent CCW's in the chain. Thus re-execution for error recovery may be carried out without the CPU main program storing a restart or check point in the channel program constituted by the CCW's. Further, the system allows the channel to be freed for other purposes when the I/O equipment is unable to accept a further command for a lengthy period, e.g. to allow repositioning of a head when the end of a tape is reached. An instruction initiating an I/O operation causes the channel to enter main storage at a designated location to obtain a channel address word providing the location in main storage of a CCW heading a chain. The CCW includes an operation code field, a location address in main storage, a count field indicating the number of data units to be transferr3d, and a flag field indicating whether or not chaining is required. With chaining, the command, e.g. read or write, is transmitted to the control unit of the I/O equipment and the main storage is accessed at the address pointed to by the location address in the CCW. With transfer of successive data units, the location address is incremented to access adjacent locations in main storage until the count field of the CCW has been reduced to zero, whereupon the next sequential CCW is acquired and transfer continues from the address pointed to by the location address in the new CCW. A unit control word provided at the channel contains a pointer for determining the addresses for obtaining the successive CCW's, the pointer being updated at the end of each transfer sequence.
Patent GB-1065334-A (GB)
Title: Improvements relating to ceramic ferromagnetic cores for inductors
IPC: H01F17/04
Filed: 1965-10-19
Abstract: 1,065,334. Inductors. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 19, 1965 [Oct. 22, 1964], No. 44212/65. Heading H1T. A ceramic ferromagnetic (ferrite) inductor core comprises an H-shaped member 1 and a plate-shaped member 3 (Fig. 1, not shown), an insulating synthetic former 7 for a coil 5 being moulded around the H-shaped member 1 and being provided with thickened portions 11 for terminal pins 13. A second plate-shaped member 3 may be provided on the other side of the member 1. The contacting surfaces of the core members may be ground flat.
Patent GB-1318549-A (GB)
Title: Device for dispensing doses of liquid
IPC: G01F11/28
Filed: 1970-09-17
Abstract: 1318549 Dispensing liquids by gaseous pressure A ANSCHERLIK 17 Sept 1970 [26 Sept 1969] 44348/70 Heading F1R A device for dispensing liquid comprises a first tube 1 having upper and lower elbows 12, 14 and a first bulb 13, a liquid reservoir 3 connected to the tube 1 by a supply conduit 2, superatmospheric and subatmospheric pressure regulators 5, 6 connected to the dosing tube and an air pump 7. The tube 1 also has a second bulb 15 of lower volume than bulb 13 and a filling bulb 16 of larger volume than bulb 13. The air pump 7 comprises a piston 72 and a cylinder 71 having a vent 73 so that it can supply superatmospheric and subatmospheric pressures controlled by regulators 5, 6, and atmospheric pressure. In operation piston 72 moves into cylinder 71 to provide a regulated superatmospheric pressure whereby liquid is forced from bulb 15 to supply a measured dose through outlet 11. Piston 72 is then withdrawn to give a regulated subatmospheric pressure so that bulbs 15 and 16 are filled first from bulb 13 and then, at a slower rate, with liquid from reservoir 3. When piston 72 passes vent 73 the system returns to the starting position shown in Fig.1. In modifications the apparatus may be arranged to supply intermittent doses using several bulbs 15 in series, Fig.2 (not shown), or multiple doses from a number of tubes 1 with one filling bulb 16, Fig. 3 (not shown). Alternatively the device may be arranged to supply doses to liquid in the regulator 5, Fig.4 (not shown).
Patent GB-1412765-A (GB)
Title: Gas discharge device
IPC: H01J17/20
Filed: 1972-09-29
Abstract: 1412765 Gas discharge display panels OWENS-ILLINOIS Inc 29 Sept 1972 [30 Sept 1971 (2)] 44958/72 Heading H1D A multiple gas discharge device has opposed arrays of electrodes and an open cell structure, at least one array of electrodes being insulated from the gaseous medium, and an ionizable gaseous medium comprising at least two of Ne, Ar, Kr and Xe, together with He in an amount of at least 0À01% atoms of He based on the total amount of gaseous medium, including He. Particular gas combinations and concentrations are specified, and other additives, such as Hg may be present. The gas pressure including the He, may be 50 to 1500 torr (e.g. 200 to 800 torr). The helium serves as a buffer gas and reduces sputtering from electrodes and dielectric layers, especially by reducing the transport range. Other effects of the buffer gas are given. The gaseous medium of Example I is added to a device as in US. Specification 3,499,167. The multiple discharge device has an electrical memory and may display numerals, letters, radar displays, aircraft displays, binary words or educational displays. Reference is made to crossed conductor electrode arrays which may be orthogonally related, or the electrodes may be shaped accordingly for presentation of standardized shapes (e.g. numerals, letters, words). Also mentioned is a gas which produces visible light or invisible radiation stimulating a phosphor for a visual display. The device of the above U.S. Specification includes for example photoemissive dielectric surfaces backed by conductor arrays, thick support members serving as heat sinks, envelope seals including ribs or devitrified glass sealant, exhaust tubulation, solder glass spacers between conductor intersections and fused to dielectric members for large panels, specified conductor and other materials, conductor resistances being < 3000 ohms/line, and may also include radioactive materials in the glass or gas space or may be U.V. excited. Also dielectric coated conductors may be in crossed-array channels in the support members.
Patent GB-1181159-A (GB)
Title: Improvements in or relating to Shells
IPC: B64D1/02
Filed: 1967-05-16
Abstract: 1,181,159. Shells. FORSVARETS FABRIKSVERK. 3 Oct., 1967 [28 Oct., 1966], No. 44992/67. Heading F3A. A divisible shell, e.g. a mortar bomb, comprises a casing having a head 2 connected to a tail 5 by means of a breakable joint, the head having a time fuse 1 and explosive charge 9 for separating the head and tail, the head containing an ejectable body 3 connected to a parachute 4 in the tail, one or more holes 10 being provided in the casing, whereby, when the charge 9 is exploded, the expanding gases issuing from the holes impart a tilting moment to the shell and prevent the parachute being fouled by the casing parts as it unfolds. The parachute is surrounded by a two-part casing 7a, 7b and is ejected by a spring 6 when a pin 8 holding the head and tail together is sheared. The body 3 can be a flare or a unit for measuring temperature and density.
Patent GB-1491298-A (GB)
Title: Transmission assembly
IPC: B23Q5/38
Filed: 1975-10-30
Abstract: 1491298 Linkwork J L MISSIOUX 30 Oct 1975 [4 Dec 1974] 45017/75 Heading F2K In a transmission assembly unit, a stepdown motor 8 equipped with a speed adjustor, rotatably drives, via a chain and sprocket 7, a cam shaft 5 carrying at its ends a pair of readily exchangeable cams 9a, 9b which act on, i.e. oscillate a pair of roller type pivoted lever followers 25a, 25b connected at their free ends 12 via chains or cables 13 to tools 16 to be operated against return, i.e. drawback springs 18, or pneumatic actuators (not shown), such that the desired frequency and amplitude of the tools may be readily varied by simply changing the cams 9a, 9b the chains or cables 13 passing around a safety device 19-21 responsive to excess tension or slackness in the chains or cables 13 to stop the transmission assembly. As shown, the cams 9 directly engage rollers 26 carried between side webs of the lever followers 25 intermediate the length thereof, the lever followers 25a, 25b being free to pivot independently about a common fulcrum spindle 11. The unit is arranged in a housing having inner walls 4 supporting the camshaft 5 and outer removable walls or flaps 3 providing easy access to exchange the cams 9 on the ends of the camshaft 5. The safety device for each chain or cable 13 comprises a bell-crank 19, 21 pivoted at 20 and carrying on its arm 19 a sprocket or pulley 14 around which the chain or cable 13 passes prior to leaving the housing after which it passes around a further sprocket or pulley 17 before being connected to the tool 16, the return springs 18 normally serving to maintain the tension in the chain or cable 13. The arm 19 is arranged to abut a spring-loaded slidable rod 27 whereby if the tool 16 jams the excess tension causes the arm 19 to overcome the spring 28 of rod 27 and upwardly move the rod 27 to engage an electric switch 29 to stop the transmission. Similarly, the arm 21 is normally held by the correct tension in the chain or cable 13 against a release spring 23, such that if the tension in chain 13, at any time, abnormally drops to produce excess slackness therein, the arm 21 is moved rightwardly by the spring 23 to trip a switch 24 to stop the transmission. Figs 4 to 6 (not shown) illustrate similar devices with additional output camshafts 5<SP>1</SP>, 5<SP>11</SP> and 5<SP>111</SP> driven from the camshaft 5 by endless chains 30, each additional camshaft similarly carrying a pair of readily exchangeable cams operating, via a pair of roller follower levers, a pair of drive outputs to additional tools 16.
Patent GB-1073041-A (GB)
Title: Improvements in or relating to bottles
IPC: B65D1/02
Filed: 1964-11-09
Abstract: 1,073,041. Container closures. STEIN - KOHLENBERGWERKE MATHIAS  STINNES A.G. Nov. 9, 1964 [Nov. 25, 1963], No. 45527/64. Heading B8T. A crown cork is applied to a double thread around a bottle mouth and the edge of the cork and the adjacent parts of its skirt are pressed against at least one thread turn. The cork may thus be unscrewed and re-used.
Patent GB-1189168-A (GB)
Title: Improvements in or relating to Jacking Mechanisms
Inventor: CRUTCHLEY LEONARD
IPC: B66F3/08
Filed: 1967-10-06
Abstract: 1,189,168. Screw jacks. VICKERS Ltd. 3 Jan., 1969 [6 Oct., 1967], No. 45939/67. Heading B8J. [Also in Division B7] A jacking mechanism, which may be used with other similar mechanisms for stabilizing a mobile crane, comprises a housing 1 supporting an arm 2 on rollers (3), Fig. 1 (not shown), in the base of the housing 1. At one end, clear of the housing 1, the arm 2 carries a jacking member 4 with a jacking foot 5 on the end of a threaded shank 6 slidably mounted in the arm 2 and prevented from rotating by a key and slot (not shown). The shank 6 is engaged with an internally threaded portion 7A of a first sleeve 7 rotatably carried by the arm 2 and with one set of teeth of a dog clutch 8 formed around one end. The other set of teeth of the dog clutch 8 is formed on one end of a further sleeve 9 disposed beneath the sleeve 7 and with a bore through which the shank 6 freely passes. A casing 10 encloses the adjacent portions of the sleeves 7, 9 and rigidly supports a series of pins 11 that are entered into a corresponding series of holes in a shoulder 12 of the sleeve 9 so that the sleeve 9 can move axially of the shank 6 but cannot rotate relatively thereto. The casing 10 also supports further pins 13 with springs 14 urging the clutch 8 into engagement. A lever 17, pivoted at 18, can slide the sleeve 9 from the position shown with the clutch 8 engaged, to a position where the clutch 8 is disengaged. A sprocket wheel 26 is rigidly secured to the sleeve 7 and forms part of a transmission linking the arm 2 with a prime mover in the form of an electric or hydraulic motor 31 and including idler sprocket wheels 27, 28A, 28B, Fig. 2, driving sprocket wheel 29 and a chain 30. The wheels 28A, 28B are mounted on the housing 1 and the wheel 27 is mounted on the arm 2. In the position shown the wheel 26 is prevented from rotating by the engagement of the clutch 8 so that if the sprocket wheel 29 is driven anticlockwise the upper run of the chain 30 moves to the left and the lower run to the right, see arrows 30<SP>1</SP>, resulting in the arm 2 moving to the right, see arrow 2<SP>1</SP>. The movement continues until a lever 21, connected to the lever 17, engages an actuating pin 25 and disengages the clutch 8. Continued driving of the chain 30 then rotates the sprocket wheel 26 and thus the sleeve 7, driving the shank 6 and foot 5 downwardly until the foot 5 firmly engages the ground whereupon the motor 31 is stopped. The lever 21 may be manually overriden by a handle 19 on the lever 17, if desired.
Patent GB-1118639-A (GB)
Title: Vulcanisation of terpolymers
IPC: C08K5/5398
Filed: 1965-10-29
Abstract: Sulphur vulcanizable terpolymers of ethylene, propylene and a small proportion of a diene are vulcanized by heating with a sulphur-containing vulcanizing agent, a thiazole vulcanization accelerator and a zinc dithiophosphate of formula <FORM:1118639/C3/1> where R and R1 are organic esterifying groups. Specified dienes are dicyclopentadiene, 2-methylene norbornene, 11-ethyl-1,11-tridecadiene, 1,4-hexadiene and cyclooctadiene. The vulcanizing agent may be sulphur, a thiuram polysulphide or amine polysulphide.  Many suitable thiazoles and zinc dithiophosphates are listed, and thiuram monosulphides, carbon black and processing oils may also be present. Examples describe the vulcanization of compositions comprising terpolymer, zinc oxide, carbon black, aromatic processing oil, sulphur, zinc O,O - bis - (1,3 - dimethylbutyl) dithiophosphate and (B) 2-mercaptobenzothiazole, (D) 2 - benzothiazolyl - 1 - hexamethylenimine carbodithioate and (F) N-tert.-butyl benzothiazole 2-sulphenamide.